Browse to pick a Sound Effect. You can type the name of a Sound or type the Sound's ID number to make the cursor jump to it. Click the "+New" button or press CTRL+N to add a new Sound. Right-click for a pop-up menu that lets you choose if you want to "Pick" this Sound, or if you want to edit it. Press CTRL+F or click "Filter" if you want to filter the list to only show Sounds that match a certain string of text. Press F2 if you want to adjust the volume.